Lubricating oil package



May 5,1942. A; c, ITTMANN I 2,282,000

LUBRICATING OIL PACKAGE Filed April 17, 1957 PRESSED PAPER PULP CONTAINER ALUMINUM BRONZE LAC'OUER COATING Adolph C.Riflmann INVENTOR. W7

M ll- 7 29 ATT RNEYS Patented May 5, 1942 LUBRICATIN G OIL PACKAGE Adolph U. Rittmann, Rochester, N. Y., assignor to Eastman Kodak Company, Rochester, N. Y., a corporation of New Jersey Application April 17, 1937 Serial No. 137,459

3 Claims.

This invention relates to containers for dispensing oils, such as edible and non-edible oils. Motor oils are commonly dispensed, at filling stations, from glass bottles or tin cans. However, breakageis entailed in the use of glass bottles, and tin cans are difficult to dispose of, particularly at village or rural filling stations. Present containers for edible oils meet with some of the same difiiculties.

I have discovered that if inexpensive containers which normally would be useless for this pur-- pose because permeable to oil (such as composition, paper, cardboard, fibre, cloth, pulp, and other non-metallic forms) are coated on the inside with a lacquer containing metal powder or flakes, they are rendered waterproof and oilproof, and suitable for the dispensing of oils. Such a container is sufiiciently inexpensive that there is no temptation to reuse it and, because of its nature, one can dispose of them readily after use.

In the accompanying drawing, attached to and forming part of this specification, is an illustration of one of the preferred forms of myinvention, in which Fig. 1 is a top plan view of a suitable container. Fig. 2 is a vertical section of the container taken along the line A-B of Fig. 1. Such a container may suitably be made of pressed paper pulp. It is coated on the inside with aluminum bronze lacquer. It may also be coated with such a lacquer on the outside for protection against oil being spilled thereon.

Any inexpensive metallic powder or flakes may be used in making the lacquer for coating the container. For instance, aluminum, copper, tin, iron, bronze and the like may be employed in powder or flake form. The lacquer may beapplied to the container by brushing, spraying, or flowing, preferably the latter.

The vehicle for the metallic powder or flakes may be any of the common paint vehicles, an oleo-resinous varnish, a solution or emulsion of a natural or synthetic resin, or a cellulose ester solution or emulsion. For instance, a suitable vehicle .may be a nitrocellulose film scrap solution.

By way of example, I may prepare a bronzing lacquer as follows, all parts being given by weight. 9 parts of nitrocellulose film scrap is dissolved in 100 parts of a solvent mixture made up as follows:

Butylalcohol 5 B. W. naphtha 20 8 parts of aluminum bronze powder are thoroughly wetted with 18 parts of ethyl acetate; '74 parts of the above-described nitrocellulose soluis a petroleum hydrocarbon, with a boiling range of 125 C. Stat.

Stated more simply, such a bronzing lacquer formula may be expressed as follows:

Per cent Ethyl acetate 18.0 Methyl acetone 23.5 Ethyl alcohol 27.0 Butyl alcohol 3.3 B. W. naphtha 13.5 Nitrocellulose film scrap 6.7 Aluminum bronze powder; 8.0

The proportion of metal powder or flakes used in the lacquer may vary widely, it being necessary merely to use enough so as to give reasonably good covering power. For instance, of the solids in the lacquer, it is usually best to employ at least about 3% of the metal powder or flakes.

The following is a suitable formula for a lacquer employing only 3% of metal powder:

Percent Ethyl acetate 23.0 Methyl acetone 23.5 Ethyl alcohol 27.0 Butyl alcohol 3.3 B. W. nap 13.5 Nitrocellulose film scrap 6.7 Aluminum bronze powder; 3.0

By actual test, I have found that a clear lacquer will not render a fibrous container proof against penetration by oil; in such case, the oil was found to penetrate in a few days. However, when a lacquer containing a few percent of metal powder or flakes was used as an inside coating for the container, it was found at the end ofsix months that no penetration has occurred. Thus, a cheap, but durable, container has been provided.

By the term pressed fiber in the appended claims, I mean any relatively heavy product made from pulp or fibers, whether natural or synthetic, such as cardboard, paper, pressed board, pulp board, fiber board and the like, whether bonded or not. By the term metallic lacquer is meant a lacquer containing metallic particles, such as metal powder or flakes.

What I claim as my invention and desire to be secured by Letters Patent of the United States is:

1. A paper container coated on the inside with a. layer of nitrocellulose bronzing lacquer con taining a metallic bronze powder, adapted to contain a lubricating oil in direct contact with the lacquer layer.

, 2. A paper container coated on the inside with a layer of nitrocellulose-aluminum bronze lac- 3. A pressed fiber container coated on the inside with a. layer of nitrocellulose bronzing lacquer containing a metallic bronze powder, adapted to contain a lubricating oil in direct contact quer, adapted to contain a lubricating oil in (11- 5 1 with the lacquer layer.

rect contact with the lacquer layer.

ADOLPH C. RITTMANN. 

